General Information
STANAG-4539 is a NATO standard for digital data communication.
The HDR variant is equivalent to MIL-STD-188-110 B appendix C mode.
Usage:
§ Transfer of digital information over HF.
Mode Details
|
|
Item |
Value |
|
Standard |
Modulation |
QPSK, 8PSK, 16QAM, 32QAM, 64QAM |
|
|
Bandwidth (Hz) |
3000 |
|
|
Symbol rate (Bd) |
2400 |
|
|
Data rate (bit/s) |
3200 / 4800 / 6400 / 8000 / 9600 / 12800 |
|
|
Error correction |
FEC, code rate 3/4 |
|
Demodulator Settings |
Demodulator |
PSK data aided |
|
|
Symbol rate (Bd) |
2400 |
|
|
SR tolerance (Bd) |
10 |
|
|
Modulation order |
8 |
|
|
Version |
A |
|
|
Adaptive equalizer |
on |
|
Features |
Demodulation |
yes |
|
|
Recognition |
yes |
|
|
Decoding |
yes |
|
|
Automatic Polarity Adjustment |
no |
|
|
Combination with other modems (modem list) |
yes |
|
|
Channel 16: Binary hex output |
yes |
|
Tuning |
The tuning frequency is 1800 Hz | |
Table 29: STANAG-4539 HDR
Figure 24: STANAG-4539 HDR Spectrogram
Modem Version History
|
Release |
Date |
History |
|
2.0.0 |
2013-01-10 |
Modem added |
|
2.2.0 |
2014-03-19 |
Data format 7N2 added |